Cold weather test on MMM and Turnigy Lipos

[Unsullied_Spy]

Done with this weather! I've got a .40 XDm but my 870 Express Super Mag packs MUCH more punch. The racing would be nice, my LHS is supposed to be moving into a place where we can get some race tracks built in the Spring. If you get some tracks in Missoula I may come up, but I have nothing race worthy (that bash spot of yours is epic though!)

[PBO]

Originally Posted by Unsullied_Spy

It took about 2 minutes for the screen on my camera to start ghosting really badly, if you spray water on any surface at that temperature it will either freeze before it makes contact or freeze on contact, the oil in your car is so cold the starter motor has a hard time turning it over, the oil in your transmission is so cold it feels like the shifter is set in stone, and your clutch fluid is so cold that it doesn't release until ~2 seconds after you take your foot off it. Freakin' sucks here, we need to stop getting our weather from Canada and start getting Aussie weather.

I stop whining when I turn the AC up!!

[mikey09120]

i love winter here in palm deset. 50*F average

[jayjay283]

Originally Posted by mikey09120

i love winter here in palm deset. 50*F average

http://www.weather.com/weather/local...rchbox_localwx Tina on the strip in palm desert. making my nose hurt and wish a had a fist full of $20s

Careful Sul, or this may happen to you as well

http://www.rc-monster.com/forum/showthread.php?t=24836

[redshift]

Yes, for those who live in the warmer climes you know it's ungodly cold when the snow takes on a crystalline glint, and crunches under your feet with a most unpleasant feel..
Far more dangerous than being stranded in the desert!

You guys are getting slammed early, NY gets that shyt in Jan/Feb, and we also see temps down to about -40. Usually only 2 weeks or less if the gods are pleased.

Spy you are furking nuts, the hell were you using for gloves? It gets below about 15 and no way am I running anything but the damn furnace!

And those poor packs... little risky there!

Good they survived but uh, maybe a disclaimer is in order for the lipo rookies?

"Spy said it was OK and my packs puffed"

[Unsullied_Spy]

You know it's cold when the snow squeaks when you step on it

We've been getting odd winters the last few years. We got 1 snow storm in October, then didn't get snow again until November and this time of year it's usually very nice, 20-30 degrees average (perfect temperature for enjoying winter) and in Jan/Feb it usually gets this cold and nasty. I had some mechanics gloves on, they are just thin enough to fit in the trigger of my controller My fingers hurt for a while afterwards, but it's fun!

I've been running lipos in the cold for 3 years now, had them completely covered in snow and run them in sub zero temperatures and never had an issue with them. Mind you, I keep them indoors at 60-70 degrees then take them outside and abuse the crap out of my truck (and being geared for 65-70 MPH on 6s lipo keeps things warm) then come right back inside so they don't really have much a chance to cool down much.

[lutach]

All the data I've seen on cold weather usage of any battery will show they don't perform anywhere near when the 25C temperature data. Voltage will drop a lot and the battery will have a difficult time supplying the power your set up might need. So be very careful.

[phildogg]

I noticed mine today were cooling off pretty quickly while running.It was around 38 deg. out and the lipos where at 73 deg. did a few speed runs with the tc4. When I checked the lipos after they were down to around 55 deg after running. so is it better to warm them before running?

[redshift]

55 is cold, you should be insulating the pack. A warm pack is a happy pack.... see these-

http://www.rc-monster.com/forum/showthread.php?t=24863

http://www.rc-monster.com/forum/showthread.php?t=24836

Credit where it's due I am parroting some of the best info on RCM thanks to many members who have a lot more time and money into this stuff. Adding to that my experience with lipos at different temps with both trucks and aircraft, and a good amount of info from other sources.

So huge thanks to all those who are so much more adept with Eagletree and in general, for their collective info on the subject!

I won't hesitate for a second to say RCM is an absolutely world class source of info for the hobby.

[redshift]

Spy last winter I used some velcro, the softer 'loop' side on my TX, and those cheap brown cotton gloves. Otherwise the radio would be impossible to hold with those. But I had the same issue, any thicker than that and finger-no-fit... But just a little velcro on the back and front of the grip worked great.